| Sipkens, Amalie Luise Pauline | Alpert | 1909 | Bremen 1 |
| Sipkens, Anke Rinze | Gartung | 1911 | Bremen 1 |
| Sipkens, August | Gartung | 1908 | Bremen 1 |
| Sipkens, Berta Konradine | Gartung | 1908 | Bremen 1 |
| Sipkens, Elise Konradine | Gartung | 1911 | Bremen 1 |
| Sipkens, Luise Albertine Gesine | Alpert | 1910 | Bremen 1 |
| Sipkens, Mathilde Dora Sietzke | Gartung | 1910 | Bremen 1 |
| Sipkens, Rinze | Veenstra | 1892 | Bremen |
| Sipkens, Sietske | Veenstra | 1896 | Bremen |
| Sipkens, Sietzke | Veenstra | 1894 | Bremen |